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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | These Ranco valves are not known as the best shut off valve ever made. I don't think they
really did a whole bunch of controlling of the temperature and I don't think they actually
did shut the water flow off completely. I think they were really meant to roughly control
the temperature and in the warmer weather when you didn’t need the heat you could use
the inline shut off valve to kill the flow to the heater core.
Alvin completely unsoldered one of these a while back and can tell you just how good of
a seal the valve made. I’ve never taken one down to that level but I did notice that mine
didn’t seem to close off the flow all the way either.
DG
Denny G
Sandwich, IL
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